Air-valve.



F. G. GOEE'.

AIR 'Myra AEPLIGAHQKL FFL-BD Z f 93g, lt man@ me; mail Wifweg@ K i Y 2,247 f2 Y I i JMM I /L/f( FRANK C. GOFF, OF DENVER, COLORADO.

AIR-VALVE.

Specicationof Letters Patent Patented Nov'. 2, 1909.

Application filed August 25, 1908. Serial No. 450,155.

To all whom fit may concern:

Be it known that I, FRANK C. Gori', a citizen oi' the United States, residingV in the city and county of Denver and State of Colorado, Y

have invented certain new and useful Im- Y rovements in Air-Valves' and l do declare the tollevving teY be a fullIk clear, and exact description or the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the igures of reference marked thereon, which form a partof this specification.

lVy invention relates to improvements in air valves for steam or hot Water heating systems, my object being to provide a device oi this classivhich shall be exceedingly si1nple and economical inv constructionT reliable, durable and efficient in use, and te these ends theY invention consists of thefeatures hereinafter described Yand claimed, all et which will be fully understood by reference terthe accompanying" drawingI in which is illus;- trated an embodiment thereof.

lnthis drawing, Figurer is a vertical serrtion talen through the casing' of my im-Y proved valver Fig. 2 is asunilarview sheaving the casinoS in the inverted positinn for cleaning; purposes.

The same reference characters indicate the same parts in all the views Let the numeral 5 designate the casing' of the valve. As shown in the drawing', the bottom of the casingY is closed by a sereiv cap (i, having a centrally located threaded orifice 7 in which is inserted a screw 8, Whose upper extremity forms the support for a hollow float 9, which isY exteriorly sealed to prevent the entrance of fluid. The top of theiioat is proirided with a projection 12, forming an auxiliary valve which may engagea seat l1 surrounding an opening 13, formed in a partition lil with which the upper partof the casing; is provided. The screw 8 may be utilized to cause the auxiliaryvalve' l2 te engage its seat 11, when for any reason this may be necessary; Connected with auxiliariv valve l2 is a stem i5 npenwhcsenpper extremity isiormeellie 5W main valer/s@ which is adapted to engage a seat 16, formed in a screw cap 17, applied to the Vupper reduced extremity 18 of the casing. Above the valve seat 1 6, the cap is provided with. a Small .Chamber ,1.9 .from the upper extremity of which leads a small oritice 20 for the escape ef the air from the valve casing.

The casing; is provided en one side with an exteriorly located chamber 21 which commnnieates with the chamber of' the main by anY and? withi l exterior chamber 23, by means ei an orifice 24, Which is adapted to be closed by a ball valve 25 Which normally rests upon a support 26, with Which a screw 27 is provided, the screw being threaded in an opening 2S formed in the casing; 29 surroimdine` the chamber 23. This chamber 23 is separated from the passage et a threaded nipple 31 by means of a mesh diaphragm or strainer 32.

The main casing 5 of theY device, is provided With a small eritice er leali port S3, whereby the main chamber is placed in com- Y municatien with the' anxiliary 21 o tn the Water et enndenseien in a steam heatimeY system, er theV Water eonstil tuting the heating merlnurein a het system', to leali freni the main chmnber inte the auxiliary chamber and thenee into the system, Tafl-sereby the may he les?t ereel Within the main chamber sufficiltly Y to allove the tleatto drcpanflepen theivalve rhis is particularly importantin a noti Water system, since the opening` of the valve allows the air imprisoned at the top of the radiators to escape, thus ebviatinp; the necessity of manually opening; the valves provided or this purpose.

From the foregoing description, the use of my improved air valve will be readily understood. Assuming that the parts are in the position shown in Fig. 1 when the steam in a steam-heating system is turned on, the steam acting upon the air, forces it into the casing oi' the valve and thence out of the small orifice 20 until all of the air has es'- caped, after which the steam vvhieh enters Y the valve casing Will condense and tlrejvater result-ing therefrom Will rise in the main chamber sufficiently te lift the neat and clese the valve lf3, to prevent the escape et? steam l from the system.

Assuming that the employed in emmeetien Weijer system, shceleh be located at the top of the radiators so that the air, which naturally seeks the highest portion of theradiator, may enter the valve and accumulate in the upper Per@ 0fY the Then it is desired to clean the valve, the` casing may be given a half turn whereby it is inverted or placed in the position shown in Fig. 2. In this event the valve 10 acted upon by the gravity of the float, will close while the opening 18 will be free to allow any foreign matter that may have accumulated in the main chamber to pass into the interior auxiliary chamber 34. The screw cap 17 may then be removed, in which event the auxiliary valve 12 will close the opening 13 by engaging the seat surrounding said opening, whereby the escape of water from the system will be prevented. At the same time, however, the auxiliary chamber 34 will be open to allow the escape of the foreign matter therefrom. If necessary, when the casing is inverted, the screw 8 may be employed to cause the auxiliary valve 12 to engage :its seat 18. Ordinarily the auxiliary Yvalve will vclose by gravity under the circumstances stated. If, however, there should be a slight obstruction be tween thev auxiliary valve and its seat, it may be found necessary to utilize the screw 8 in order to cause the auxiliary valve to tightly engage its seat. In this manner the valve may be thoroughly cleansed.

When the valve is inserted, as shown in Fig. 2, the ball valve 25 closes the opening 24 and prevents the water of condensation in a steam heating system, or the heating medium in a hot water system, from passing from the system into the main casing. If it is desired to secure the ball valve in the closed position, the screw 27 may be turned until the part 26 attached to its inner extremity engages the ball valve from above, thus locking it in the position shown in Fig. 2.

I-Iaving thus described my invention what I claim is:

1. An automatic air valve, comprising a casing, forming a water-containing well, said casing having an inlet passage communicating with the upper portion thereof, and an air vent, a lioat within the well, the said float carrying a valve for controlling the said vent, the casing also having a restricted port, located above the bottom of the well',

' but below the line of flotation, and adapted toprovide a continuous drain to said inlet passage, until the water level within the well falls' to the'lev'el of th'esaid port;

2. In a device of the class described, the combination of a casing forming a watercontaining well, the said casing having an inlet passage communicating with the upper portion thereof, and a vent port, a non-expanding float within the well, the said iioat carrying a valve for controlling the said vent, the casing also having a restricted port above the bottom of the well, but below the line of flotation and adapted to provide a continuous drain to the said inlet passage until the water level withinthe well falls to the level of the said port.

3. The combination of a casing, 'forming a water-containing well, said casing having an inlet passage communicating with the upper portion thereof, and an air vent, a float within the well, said float carrying a valve for controlling said vent, the casing also having a restricted port, located above the bottom of the well but below the line of flotation, and adapted to provide a continuous drain to said inlet passage, until the water level within the well falls to the level of the said port, and a screw placed at the bottom of the casing and arranged to act on the float to close the valve.

t. An automatic air valve, comprisingn a casing forming a water-containing well, the said casing having an inlet passage communicating with the upper portion thereof, and an air vent, a removable cap in which the vent is formed, a float within the well, the said float carrying a valve for vcontrolling said vent, the casing also having a restricted port, located above the bottom of the well but below the line of flotation, and adapted to provide a continuous drain to the said inlet passage, until the water level within the well falls to the level of said port, a partition formed in the upper part of the casing, a chamber between the well and the air vent, the partition having an opening forming communication with the said chamber and the water-containing well, a second valve for controlling the saidopening in the partition, the said second valve being also carried by the float and engaging its seat when the said cap is removed, both valves being located at one end of the float and suitably separated for the purpose set forth. 5. An automatic air valve, comprising a casing forming a water-containing well, said easing having an inlet passage communicating with the upper portion thereof, and an air vent, a float within the well, the said float carrying a valve'for controlling the said ventthe casing also having a restricted port located above the bottom of the Well but below the line of flotation, and adapted to provide a continuous drain to the said inlet passage until the water level within the well falls to the level of the said port, the last named port being so arranged that a 'considerable' quantity of water is contained ik the We site? iewater eree'ope Y i fonirg Wake? oerg'eng ing im inlef'e opeming ai the egzi ioef with: iii the WeB, ehe Casing hwing a removabe cap provided with a vent port, a Valve for eontroling said port, 2L partition forming izithtle upperpa; of the easing, a el Beim/een the wel? and the airfvent po1't,fhe partition having an opening forming oomnxunieation between the said Chamber 21115. theY "Natie-1 oont'siining weil, frseeeiei geheim* controlling said pzution opening, both of Said valves being mounted on the float and so sgaeee se the Seeondf waive is the vent port emp is removed, :mdf memes placed at the bottom of the easing and' aet- .A Ain aiiioimtie feeble? ze militie@ we; p1 Jieewit mi Y s.. ge, eoiimiifmefiting with mmefe peioi of *ehe Weil@ an im gif vefr, 25 the well,Y the Sziiof ozit carrying a, valve for Y controlling the Vent, the Weil having a res-riee port loeees zibeme its betitoin? but below the lille of otzitioi, alle? aape to pfove a continuous dmili from the Well to 3o Y the said iuie posszfge, vmti the Waef leve i in the we to he eve peli in testimony Wheeo I axmy signature 'm pieeeiee of two witnessesi Gr Louise Cos'NE-R,

ALoDIA IAIUTCHISON,V 

